Patents by Inventor Shoji Wakoh

Shoji Wakoh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electrostatic recording medium having an electrically conductive layer containing pre-dispersed electrically conductive carbon black and polyurethane binder resin
    Patent number: 4442160
    Abstract: An electrostatic recording medium is disclosed comprising a recording layer, a conductive layer, and a support, the conductive layer being a dried coating film of a mixture composed of (A) a polyurethane binder resin prepared by reaction of a polyester and a polyisocyanate, and (B) a predispersion of carbon black.
    Type: Grant
    Filed: July 13, 1982
    Date of Patent: April 10, 1984
    Assignees: Daicel Chemical Industries, Ltd., Fuji Xerox Co., Ltd.
    Inventors: Hirotaka Toba, Masanori Itoh, Keita Nakano, Shoji Wakoh, Toshihiko Toyoshima, Hidemasa Todo
  • Electrostatic recording member
    Patent number: 4410584
    Abstract: An electrostatic recording member comprising a recording layer, an electrically conductive layer and a support, wherein the electrically conductive layer is composed of from 2 to 40 parts by weight of electrically conductive micro-fine powder dispersed in from 60 to 98 parts by weight of an organic polymer binder, and has a surface resistivity of 10.sup.6 to 10.sup.8 Ohms.
    Type: Grant
    Filed: June 17, 1981
    Date of Patent: October 18, 1983
    Assignees: Daicel Chemical Industries, Ltd., Fuji Xerox Co., Ltd.
    Inventors: Hirotaka Toba, Masanori Itoh, Keita Nakano, Shoji Wakoh, Toshihiko Toyoshima, Hidemasa Todd